Holtest SERIES 368 -Three-point and Two-point Internal Micrometers-Mitutoyo

Holtest SERIES 368 - Three-point and Two-point Internal Micrometers-Mitutoyo

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Holtest 
SERIES 368 — Three-point/Two-point Internal Micrometers

• Titanium-coated measuring pins on the threepoint type (over 6mm range models) provide excellent durability
and impact resistance and allow the instrument to measure right to the bottom of a blind hole.

• Three-point bore micrometer with measuring range 6mm or longer allows stable measurement through automatic centering.
• Can measure deep holes using an Extension rod (optional) which is available on models over 6mm (.275") measuring range.
• Ratchet Stop ensures constant-force, repeatable measurement.
• Setting Rings for accurately setting the instrument are optional. Refer to page C-35 for details.

Range (mm)
L3 (mm)
L4 (mm)
L5 (mm)
2 - 6


2
6 - 12
2 or below
2.5
12 - 20
0.3 or below
5.6
3.5
20 - 30
8.35.2
30 - 50
13.010.0
50 - 100
17.0
100 - 300
12.4 or below
21.0 

SPECIFICATIONS

Metric

Order No.RangeGraduationAccuracy*1Extension Rod (optional)
(Two-point)
368-001
2-2.5mm
0.001mm±2µm (within 2µm)

368-002
2.5-3mm
368-003
3-4mm
368-004
4-5mm
368-0055-6mm
(Three-point)
368-161
6-8mm952322 (100mm)
368-162
8-10mm
368-16310-12mm
368-16412-16mm0.005mm952621 (150mm)
368-16516-20mm
368-16620-25mm±3µm (within 3µm)
952622 (150mm)
368-16725-30mm
368-16830-40mm
368-16940-50mm
368-17050-63mm952623 (150mm)
368-17162-75mm
368-17275-88mm
368-17387-100mm
368-174100-125mm±5µm (within 5µm)
368-175125-150mm
368-176150-175mm
368-177175-200mm
368-178200-225mm
368-179225-250mm
368-180250-275mm
368-181275-300mm








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